Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/KY/FAIRFIELD

Fairfield ZIP code, Kentucky

The ZIP code for Fairfield, KY is 40020, and its area code is 502.

USPS city name
1 ZIP code
Overlapping the city
1 more
Population
194
Area code
502

NANPA lists no telephone rate centre for Fairfield itself, so these are the area codes of the nearest one, Bloomfield (6.4 miles). A town on an area-code boundary can differ from its neighbour.

Mail addressed to Fairfield uses the ZIP code above. 1 more ZIP code covers part of the city but is addressed as somewhere else; they are listed separately below.

ZIP codes addressed as Fairfield

ZIP codes with the USPS city name Fairfield
ZIP City Type Population Median income Median home
40020 Fairfield , KY Standard 199 $90,712 —

Other ZIP codes overlapping Fairfield

These ZIP codes cover part of Fairfield but are addressed as somewhere else.

ZIP codes overlapping Fairfield
ZIP City Type Population Median income Median home
40013 Coxs Creek , KY Standard 6,670 $100,226 $265,300

Map of Fairfield ZIP codes

40020

The ZIP codes of Fairfield, KY, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Fairfield

The nearest larger towns are Bloomfield (1,124 people, 4.0 mi), Taylorsville (1,496 people, 7.3 mi) and Bardstown (13,804 people, 8.7 mi).

Towns near Fairfield
TownPopulationDistance
Bardstown 13,804 8.7 mi
Mount Washington 18,480 12.0 mi
Shepherdsville 14,533 17.6 mi
Pioneer Village 2,723 18.2 mi
Springfield 2,899 18.7 mi
Hillview 8,797 19.2 mi
Simpsonville 3,062 19.7 mi
Shelbyville 17,668 20.9 mi
Jeffersontown 29,199 21.4 mi
Louisville/Jefferson County metro government 631,818 21.5 mi
Middletown 9,763 22.7 mi
Douglass Hills 5,474 22.9 mi
Hurstbourne 4,702 24.0 mi
Anchorage 2,506 24.8 mi

More nearby: every ZIP code in Nelson County · Kentucky ZIP codes

Cite this page

zipcodes.pro. “Fairfield, KY ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ky/fairfield

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